Tiny clean up
Tiny clean up

wusphinx/tidb,Cofyc/tidb,c4pt0r/tidb,kyle-wang/tidb,zs634134578/tidb,pingcap/tidb,mccxj/tidb,ngaut/tidb,c4pt0r/tidb,ming-relax/tidb,andelf/tidb,Nify/tidb,CodeRushing/tidb,qhsong/tidb,c4pt0r/tidb,ngaut/tidb,astaxie/tidb,pingcap/tidb,ueizhou/tidb,louishust/tidb,silenceper/tidb,XuHuaiyu/tidb,kyle-wang/tidb,pingcap/tidb,c4pt0r/tidb,wusphinx/tidb,JinheLin/tidb,anywhy/tidb,JinheLin/tidb,anywhy/tidb,coocood/tidb,yuanwhy/tidb,liyu4/tidb,zimulala/tidb,gaocegege/tidb,spongedu/tidb,qiuyesuifeng/tidb,8cbx/tidb,astaxie/tidb,pingcap/tidb,EvilMcJerkface/tidb,louishust/tidb,c4pt0r/tidb,zimulala/tidb,kyle-wang/tidb,EvilMcJerkface/tidb,silentred/tidb,simon-xia/tidb,mccxj/tidb,gaocegege/tidb,ngaut/tidb,tiancaiamao/tidb,c4pt0r/tidb,spongedu/tidb,kyle-wang/tidb,liyu4/tidb,qiuyesuifeng/tidb,andelf/tidb,zs634134578/tidb,ming-relax/tidb,cosmtrek/tidb,Cofyc/tidb,pingcap/tidb,yangwenmai/tidb,silenceper/tidb,cosmtrek/tidb,ngaut/tidb,myrice/tidb,pingcap/tidb,8cbx/tidb,tiancaiamao/tidb,ngaut/tidb,CodeRushing/tidb,myrice/tidb,ueizhou/tidb,Nify/tidb,ngaut/tidb,simon-xia/tidb,yuanwhy/tidb,coocood/tidb,yangwenmai/tidb,silentred/tidb,kyle-wang/tidb,kyle-wang/tidb,qhsong/tidb,XuHuaiyu/tidb